linux-kernel - Re: [PATCH v3 08/16] irqchip/gic: Configure SGIs as standard interrupts

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Message-ID: <a88528cd-eb76-367a-77d6-7ae20bd28304@nvidia.com>
Date:   Thu, 17 Sep 2020 08:54:12 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Marc Zyngier <maz@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>
CC:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        "Sumit Garg" <sumit.garg@...aro.org>, <kernel-team@...roid.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Russell King <linux@....linux.org.uk>,
        Jason Cooper <jason@...edaemon.net>,
        Saravana Kannan <saravanak@...gle.com>,
        Andrew Lunn <andrew@...n.ch>,
        Catalin Marinas <catalin.marinas@....com>,
        "Gregory Clement" <gregory.clement@...tlin.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        "Linux Samsung SOC" <linux-samsung-soc@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Will Deacon <will@...nel.org>,
        Valentin Schneider <Valentin.Schneider@....com>,
        linux-tegra <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v3 08/16] irqchip/gic: Configure SGIs as standard
 interrupts


On 17/09/2020 08:50, Marc Zyngier wrote:
> Hi Linus,
> 
> On 2020-09-17 08:40, Linus Walleij wrote:
>> On Wed, Sep 16, 2020 at 5:11 PM Marc Zyngier <maz@...nel.org> wrote:
>>
>>> Can you try the patch below and let me know?
>>
>> I tried this patch and now Ux500 WORKS. So this patch is definitely
>> something you should apply.
>>
>>> -                       if (is_frankengic())
>>> -                               set_sgi_intid(irqstat);
>>> +                       this_cpu_write(sgi_intid, intid);
>>
>> This needs changing to irqstat to compile as pointed out by Jon.
>>
>> With that:
>> Tested-by: Linus Walleij <linus.walleij@...aro.org>
> 
> Thanks a lot for that.
> 
> Still need to understand why some of Jon's systems are left unbootable,
> despite having similar GIC implementations (Tegra194 and Tegra210 use
> the same GIC-400, and yet only one of the two boots correctly...).

So far, I have only tested this patch on Tegra20. Let me try the other
failing boards this morning and see if those still fail.

Cheers
Jon

-- 
nvpublic